Title: The effect of SLM parameters on geometrical characteristic of open porous NiTi scaffolds
Authors: Speirs, Mathew
Kruth, Jean-Pierre
Van Humbeeck, Jan
Schrooten, Jan
Buls, Sam
Dadbakhsh, Sasan
Luyten, Jan
Issue Date: 1-Oct-2013
Publisher: Taylor and Francis
Host Document: VRAP Advanced Research in Virtual and Rapid Prototyping
Conference: VRAP location:Leiria date:1-5 Oct 2013
Abstract: Selective laser melting (SLM) is a promising technique for the production of biometallic scaffolds for orthopaedic applications. To produce successful scaffolds, the laser parameters should be carefully selected in order to achieve open porosity especially when pores are <1000μm. In this study, we investigate the effect of different laser parameters (capable to produce dense bulk NiTi samples) on production of scaffolds with open porosities of 1000μm and varying strut thicknesses 100-300μm. Two different sets of laser parameters were used: 40W laser power with 160mm/s scanning velocity and 250W with 1000mm/s, corresponding to low and high laser parameters respectively. Micro-CT scanning experiments were carried out to illustrate the limitations of laser parameters in production of open porous scaffolds. Volume fraction and closed porosity were assessed. It was found that a large CAD mismatch was observed in the building (XZ) direction and internal porosity appears within struts of the samples produced with high laser processing parameters. The residual particles on struts were also shown to increase as strut thickness increases.
Publication status: accepted
KU Leuven publication type: IC
Appears in Collections:Production Engineering, Machine Design and Automation (PMA) Section
Surface and Interface Engineered Materials

Files in This Item:
File Description Status SizeFormat
VRAP_M Speirs.pdf Accepted 946KbAdobe PDFView/Open Request a copy

These files are only available to some KU Leuven Association staff members


All items in Lirias are protected by copyright, with all rights reserved.